// 题目来源：https://iai.sh.cn/problem/499
#include <bits/stdc++.h>
using namespace std;
int a[100001];
int main() {
  int n;
  cin >> n;
  long long s = 0;
  for (int i = 1; i <= n; i++) {
    cin >> a[i];
    s += a[i];
  }
  for (int i = 1; i <= n; i++) {
    if (a[i] >= s - a[i]) {
      cout << "No";
      return 0;
    }
  }
  cout << "Yes";
  return 0;
}